JP2005348050A - Video apparatus and video output method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a video apparatus capable of achieving both smooth moving image reproduction and clear and high-resolution still image capture without blur.
The video apparatus includes an interlaced imaging unit that captures a captured image as an interlaced image by an interlaced scan, a progressive imaging unit that captures a captured image as a progressive image by a progressive scan, and a progressive image that is an interlaced image. And an output unit that discretely mixes the interlaced image converted by the image conversion unit into the interlaced image captured by the interless imaging unit and outputs the interlaced image as a series of moving images.
[Selection] Figure 2

Description

  The present invention relates to a video apparatus and a video output method, and more particularly to a video apparatus having both functions of moving image reproduction and still image capture.

  With the recent widespread use of personal computers (hereinafter referred to as PCs) and digital cameras, and the remarkable increase in image quality of printers, it has become possible to easily print captured still images with high image quality. On the other hand, there has also been a demand for extracting a desired still image from a captured moving image after printing a moving image with a video camera or the like and printing it out. Conventionally, moving pictures taken by these video cameras have been taken at a constant shutter speed of about 1/60 second which is relatively slow and suitable for moving pictures.

  When a still image is captured from a moving image shot in this way, the image is blurred due to the movement of the subject or blurring at the time of shooting, and it is difficult to obtain a clear still image. Some devices have a mode that uses a high-speed shutter to capture fast-moving objects. If the image is captured in this mode, the captured still image will be clear. There was a problem that the movement was jerky.

In order to improve these, there has been proposed a technique in which a high-speed shutter photographed image is periodically inserted during photographing at a low shutter speed, and a photographed image obtained by the high-speed shutter is mixed when capturing a still image ( For example, see Patent Document 1.)
JP-A-7-322127

  However, since the one disclosed in Patent Document 1 is an interlaced (interlaced scanning) photographed image for both still images and moving images, there is a problem that the vertical resolution of the still images is halved. Further, as in the prior art, when searching for a still image after a request for still image capture, there is a problem that a desired image cannot be displayed.

  The present invention has been made in view of the above circumstances, and an exemplary object thereof is to provide a video apparatus capable of achieving both smooth video playback and clear, high-resolution still image capture without blur. And More specifically, a progressive image shot with a high-speed shutter for still images is appropriately converted into interlaced images in an image shot with a low-speed shutter with interlace, and output at the time of still image capture. (Sequential scanning) By adopting an image at the time of shooting as a captured image, it is possible to achieve both high-performance video shooting and still image capture for the user by making both video playback and clear, high-resolution capture still images compatible. One of the purposes.

  In order to achieve the above object, a video apparatus according to an exemplary aspect of the present invention includes an interlaced imaging unit that captures a captured image as an interlaced image by interlaced scanning, and a captured image that is captured as a progressive image by progressive scanning. A progressive imaging unit, an image conversion unit that converts a progressive image into an interlaced image, and an interlaced image converted by the image conversion unit is discretely mixed into an interless image captured by the interless imaging unit. And an output unit for outputting as a moving image. The video apparatus may further include a display for displaying a series of moving images.

  The shutter speed of the interlaced imaging unit may be different from the shutter speed of the progressive imaging unit. In that case, it is more desirable if the shutter speed of the progressive imaging unit is faster than the shutter speed of the interlaced imaging unit.

  The camera may further include a still image capture function for acquiring a still image from a series of moving images in response to a user's request, and output a progressive image as a still image. It is further desirable that a progressive image captured at a time closest to the time when a still image acquisition request is input is output as a still image. Furthermore, it may further have a function of selecting a still image to be acquired within a predetermined time range before and after the input point of the still image acquisition request.

  An imaging device according to another aspect of the present invention includes an imaging unit that performs imaging at a predetermined shutter speed, another imaging unit that performs imaging at a shutter speed different from the predetermined shutter speed, and imaging captured by the imaging unit. And an output unit that mixes a captured image captured by another imaging unit and outputs the image as a series of moving images.

  According to another aspect of the present invention, there is provided a video output method in which a progressive image captured by a progressive scan is converted into an interlaced image and discretely mixed into an interless image captured by an interless scan. It has the step which outputs as a moving image, It is characterized by the above-mentioned.

  Other objects and further features of the present invention will be made clear by embodiments described below with reference to the accompanying drawings.

  According to the present invention, an image that is progressively shot with a high-speed shutter for still images is appropriately mixed and output in an image that is interlaced with a low-speed shutter for moving images. When capturing an image, an image at the time of high-speed shutter photography near the image at the time of capture can be automatically selected as a captured image. Therefore, smooth moving image reproduction and clear and high-resolution capture still image without blur can be compatible, and a high-performance moving image capturing device and receiving device can be obtained for the user. In addition, a high-performance still image capture system can be provided for the user. By temporarily storing the progressive image in the apparatus, it is possible to display an image that is more desirable for the user.

[Embodiment 1]
Embodiment 1 of the present invention will be described below with reference to the drawings.

  FIG. 1 is a block diagram showing an outline of the entire video apparatus according to Embodiment 1 of the present invention. Reference numeral 11 denotes a digital video camera device (DV device), which captures and records images and sounds in a camera unit and records them on a tape. Also, the recorded image and sound are reproduced. These are controlled through a network S11, which will be described later, and can output video, audio, and control data to a television apparatus (TV apparatus) 12.

  The TV device 12 receives television from a broadcasting station, transmits / receives data to / from a device connected to the network S11, transmits / receives data to / from the remote control device 13, displays video, audio, operation data, etc., outputs audio, Further, still image capture (acquisition of still images) of an image displayed by an operation from the remote control device 13 is controlled and displayed.

  The remote control device 13 is used by a TV viewer to control and operate the TV device 12, the DV device 11, and the like.

  The network S11 connects the DV device 11, the TV device 12, and the like, and transmits and receives data.

  FIG. 2 is a block diagram showing the inside of the DV apparatus 11 in detail. The DV apparatus 11 includes an imaging unit 11a, a conversion unit 112, a data synthesis unit 113, a voice input unit 114, a recording unit 115, an interface unit 116, and an overall control unit 119. The imaging unit 11a is roughly configured to include a lens unit 1101, an iris unit 1102, an imaging element 1103, an amplification unit 1104, and an imaging control unit 1109.

  Imaging light is collected from the lens unit 1101 and output to the subsequent stage. The iris unit 1102 adjusts the amount of light input to the image sensor 1103 described later. The iris unit 1102 is controlled by an imaging control unit 1109 described later.

  The image sensor 1103 is constituted by a CCD or the like, accumulates one cycle of light input, converts it into an electrical signal, and outputs it as an interlaced or progressive video signal Vi to an amplifying unit 1104 and an imaging control unit 1109 described later. . The light accumulation time in the CCD is controlled by the imaging control unit 1109.

  The amplifying unit 1104 includes a sample-and-hold unit and a variable amplifying unit that amplifies the signal from the sample-and-hold unit. The video signal converted by the CCD element is sampled, held, amplified, and converted later. The video output signal Vo is output to the unit 112. The gain of the amplification unit 1104 is variable by an imaging control unit 1109 described later.

  The imaging control unit 1109 has a function of controlling the imaging unit 11a. A video signal converted into an electrical signal from the CCD is inputted, photometric processing is performed, and the iris and the accumulation time are controlled so that the light accumulation amount in one photographing cycle does not exceed the accumulation capacity of the CCD. The accumulation time is the shutter speed for the camera.

  Further, the variable amplifying unit of the amplifying unit 1104 is controlled according to the converted video signal level, and the video output signal Vo is integratedly controlled together with the iris and CCD accumulation time, and is output from the video output signal Vo. At the same time, a synchronizing signal of the video signal is output. In addition, each unit is controlled based on setting information such as a shutter speed instructed by the control unit 119 described later. Also, shooting information data Mo such as an iris value and a shutter speed (CCD accumulation time) set at the time of shooting is output in units of shooting cycle (frame or field).

  FIG. 3 is a diagram illustrating signals in the imaging unit 11a. VD is an imaging cycle signal, and the imaging unit 11a operates based on the imaging cycle signal VD. The period is 1/60 second in the present embodiment.

  CHG is an accumulation time control signal that can be set for each imaging period, and light accumulation of the CCD image sensor 1103 is performed based on the accumulation time control signal CHG. A video signal Vi represents an output signal from the CCD image sensor 1103.

  VG is a gain control signal of the variable amplifying unit of the amplifying unit 1104, and can be set in units of photographing periods, like the accumulation control signal CHG. Vo is a video output signal from the amplifying unit 1104. Although not shown, the synchronization signal and the like are also included in the output as described above.

  Mo is shooting information data for outputting shooting information such as an iris value and a shutter speed (accumulation time) of a shot image in synchronization with a shooting cycle.

  Do indicates interlaced image data output from the conversion unit 112 described later. The conversion unit 112 is a conversion unit that digitizes and compresses the video signal, digitizes the input video signal as video data, and outputs the video data to the data synthesis unit 113 described later. In the first embodiment, after A / D conversion, a progressive image is detected, divided into odd / even lines, and the entire data is processed as an interlaced image like the interlaced image data Do shown in FIG. Are rearranged, and the whole is converted and output as interlaced image data in a so-called DV format defined by IEC61883.

  Reference numeral 113 denotes a data synthesizing unit that compiles shooting information data Mo output from the imaging control unit 1109 and shooting mode information obtained from the control unit 119 described later as video additional data. At this time, information at the time of photographing is added to the image data subjected to the interlace conversion by the conversion unit 112. This is combined with other information data such as video data converted into the DV format by the conversion unit 112, audio data from the audio input unit 114 described later, and data such as synchronization information and shooting date and time, and a recording unit described later 115, and outputs to the interface unit 116 described later. In addition, the composite data recorded in the recording unit 115 is output to the interface unit 116, and conversely, format conversion is performed when the data input to the interface unit 116 is recorded in the recording unit 115.

  FIG. 4 is a diagram showing the contents of the video additional information data. The recording mode indicates in which mode shooting has been performed. The DV apparatus 11 includes (1) a normal shooting mode for shooting at a shutter speed of 1/60 seconds, (2) a sports mode for shooting at a high shutter speed, and (3) n at a low shutter speed of 1/60 seconds. -1 frame (2n-2 field) shooting, progressive and one-cycle shooting with a high shutter speed of about 1/250 seconds, and a video / still image mode that repeats one-cycle rest, which mode was recorded Yes.

  The high shutter speed is usually 1/250 seconds, but may vary depending on the shooting conditions. In this case, the shutter speed can be determined by looking at the shutter speed described later. In addition, the progressive shooting period n also fluctuates, but the value can also be determined by looking at the term of the high-speed shutter period described later. In each item of the lens F value, the iris value, and the shutter speed, setting values at the time of shooting this image are described, and these can be confirmed at the time of reproduction.

  When the value of the progressive shooting flag in the moving image / still image shooting mode is “0”, the shooting is interlaced. When the value is “1”, the shooting is progressive. By looking at this section, it is possible to distinguish between interlaced and progressive shooting. This item is not necessary in shooting modes other than the moving image / still image shooting mode.

  In the progressive shooting cycle n, the value of the cycle n when shooting in the moving image / still image shooting mode is described, and it is possible to identify the number of times of shooting in the progressive mode. Note that when the progressive shooting frame is not periodically output in a mode other than the moving image / still image shooting mode, the value of this term has no meaning, and in this case, it is necessary to directly check the shutter speed.

  Reference numeral 114 denotes an audio input unit which, along with video shooting by the imaging unit 11a, inputs audio through a microphone, amplifies it, digitizes it, and outputs it as audio data to the data synthesis unit 113.

  A recording unit 115 includes a mechanism unit for recording data on a tape, a control unit, and a magnetic tape unit. The video generated by the data synthesis unit 113 in accordance with an instruction from the control unit 119. Audio and video additional data are recorded on the magnetic tape as shown in FIG.

  FIG. 5 shows a recording format on a magnetic tape, which includes video data 72V, audio data 74A, video additional data 73VAUX, and other information data 71H. Reference numeral 116 denotes an interface unit for connecting the DV apparatus 11 to the TV apparatus 12 or the like to input / output the video / audio / additional data of FIG. 4. In the first embodiment, an interface based on the IEEE 1394 standard and It has become.

  FIG. 6 shows an output format from the interface unit 116, which includes video data 72V, audio data 74A, video additional data 73VAUX, and other information data 71H, as in FIG. In contrast to recording in the recording unit, the video additional data is recorded once in the shooting period. The output from the data synthesizing unit 113 is output by dividing the data shown in FIG.

  Reference numeral 119 denotes an overall control unit that performs operation control and overall control, and comprehensively controls the DV apparatus 11. This includes operation buttons for mode setting, shooting start / stop, etc., and a small display device for the user to perform various checks during operation. The control unit 119 controls the imaging unit 11a, the recording unit 115, and the like according to the user's button operation, performs video shooting and audio recording, records synthesized data on the magnetic tape of the recording unit 115, and from the interface unit 116. And the recorded magnetic tape is reproduced, and the combined data therefrom is output from the interface unit 116.

  FIG. 7 is a diagram for explaining the details of the TV device 12.

  An antenna unit 1201 receives TV broadcast radio waves. A tuner unit 1202 amplifies a high-frequency TV signal of TV broadcast, selects a desired station, demodulates and separates digital data in which video / audio signals and various data signals are mixed, so-called TS data, and video The audio signal is output to the first decoder unit 1204, and other broadcast-related information data such as data broadcast data, EPG data, billing information, and event data is output to the 1290 control unit via the internal bus S129.

  Reference numeral 1203 denotes a first frame information detection unit which separately detects video additional data for each shooting period from the video signal / audio signal from the video signal received by the tuner unit 1202 and includes frame shooting information therein. 4, when the recording mode is the moving image / still image mode and the progressive shooting flag is present and the value thereof is “1”, the information is sent to the first decoder unit 1204. The frame information is also output to the internal bus S129 in response to a request from the control unit 1290.

  FIG. 8 is a diagram of an imaging cycle signal VD output from the first frame information detection unit 1203, a video signal Vi, and a progressive shooting signal HS. An image with a cycle of the progressive shooting signal HS of “1” is shown. This indicates that a high-speed shutter and progressive shooting were performed during shooting, and a progressive shooting frame can be obtained by combining these for two periods.

  Reference numeral 1204 denotes a first decoder unit for broadcast video / audio data, which decodes the separated video / audio signal and outputs the decoded video / audio signal to the audio control unit 1211 and the image control unit 1221. Further, the progressive shooting signal HS of the shooting period image is set to “1” by the high-speed shutter and progressive from the progressive shooting flag, and is output to the image control unit 1221 together with the video signal.

  An audio control unit 1211 switches or synthesizes audio data from the first decoder unit 1204, the decoder unit 1232, and the internal bus S129, and controls volume, sound quality, presence, and the like, and an audio output unit 1212 Output to.

  An audio output unit 1212 amplifies the audio signal input from the audio control unit 1211 and outputs audio from the speaker. Reference numeral 1221 denotes an image control unit, which is output from the first decoder unit 1204 or the decoder unit 1232 in synchronization with the synchronization signal under the control of the control unit 1290 when the power of the TV apparatus 12 is ON. The progressive shooting signal is monitored. If there is such a signal, an image of the first decoder unit 1204 or the decoder unit 1232 corresponding to the signal “1” is selected, and after combining the ODD and EVEN fields, a description will be given later. Stored in the capture memory 1223. If there is no progressive shooting signal, it is not stored.

  In addition, various image data, and further, image data from the internal bus S129 are switched, combined, enlarged / reduced, and the like based on control from the control unit 1290, and output to the display 1222. Further, the still image data stored in the capture memory 1223 is read from the capture memory 1223 and output to the display 1222.

  Reference numeral 1222 denotes a display device that displays image data from the image control unit 1221. Reference numeral 1223 denotes a capture memory which captures and stores a progressive shooting frame from the image control unit 1221 as still image data under the control of the control unit 1290.

  The capture memory 1223 has a FIFO structure. When the capture memory runs out of space, the old image is discarded and the latest image is always stored. In the first embodiment, 20 still image data can be stored continuously.

  Reference numeral 1230 denotes an interface unit for connecting the DV device 11 and reproducing video / audio shot by the DV device 11. In the first embodiment, the IEEE 1394 bus is connected in the same manner as the DV device 11. It is what was used.

  Reference numeral 1231 denotes a second frame information detection unit, which is obtained from the combined data of video, audio, and additional information captured by the imaging unit 11a or reproduced from the recording unit 115 and input via the interface unit 1230. Shooting frame information is separated and detected, and when a progressively shot image is detected in the frame information, the progressive shooting information is output to the decoder unit 1232 together with video data. The separated additional information is also output to the internal bus S129 in response to a request from the control unit 1290.

  A second decoder unit 1232 decodes the video / audio data of the DV apparatus 11 and outputs the video data to the image control unit 1221 and the audio control unit 1211 together with the progressive shooting signal. At the same time, in the case of an image photographed progressively, the progressive photographing signal HS of the corresponding period is set to “1” and is output to the image control unit 1221.

  A data storage unit 1240 stores other broadcast-related information data such as data broadcast data, EPG data, billing information, and event data, and still image data stored in the capture memory 1223. .

  Reference numeral 1280 denotes a remote controller. The remote control control unit 1280 is a remote control transmission / reception control unit using infrared rays, and transmits / receives data to / from a remote control device 13 (to be described later) transmitted by the TV viewer, and sends the data to the control unit 1290. Forward.

  Reference numeral 1290 denotes a system control unit that controls each unit in the TV apparatus 12 in an integrated manner. A CPU, a main memory, a bus control unit, a program storage unit, a parameter storage unit, and the like are configured. In TV reception, the above-described tuner unit 1202 is controlled, and channel switching, billing control, EPG data, broadcast event table, and other information data analysis control are performed. Also, the image control unit 1221 is controlled to display video / audio signals, icons, various information from the tuner unit 1202, the interface unit 1230, and the like. Similarly, the voice control unit 1211 is controlled, voice synthesis and output control are performed, and output control to the voice output unit 1212 is performed.

  At the time of capturing a still image, setting of a mode, selection and display of an image to be captured, storage of the image in a data storage unit 1240, etc. based on operation of a remote control device by a TV viewer and information from video additional data To control.

  S129 is an internal bus having functions as a data bus and a control bus, and as described above, is a bus in the TV device 12 used for transferring image and audio data and transferring information of each part. .

  FIG. 16 shows a block diagram of the remote control device 13. A remote control transmission unit 1301 transmits remote control key data output from a remote control key unit 1302, which will be described later, to a remote control control unit 1280 in the TV apparatus 12.

  Reference numeral 1302 denotes a remote control key unit, which is a key button for the TV viewer to operate the TV device 12 and other devices connected to the TV device 12. The remote control has various operation key buttons such as power ON / OFF, input switching, channel switching, volume up, volume down, display image capture, menu, up cursor, down cursor, left cursor, right cursor, enter, return, etc. It is used for TV operation.

  A remote control unit 1303 controls the remote control device 13 in an integrated manner. Control such as key operation, key press detection, generation of key code data, and transmission of key code data from the remote control transmission unit 1301 is performed.

  Next, the operation of the DV apparatus 11 according to the first embodiment will be described using the flowchart shown in FIG. In the DV apparatus 11, it is assumed that the above-described moving image / still image shooting mode is selected and the shooting button is pressed.

  First, the control unit 119 notifies the imaging control unit 1109 that the moving image / still image shooting mode has been selected and the shooting start button has been pressed. The imaging control unit 1109 sets an appropriate iris and accumulation time, performs photometry processing, determines the iris value that is the smallest in the iris value range suitable for moving image imaging, and determines the determined value as a lens F value or the like. Along with the shooting information, the control unit 119 is notified (st2101).

  Next, the gain (G1) in the amplification unit 1104 is calculated at a low shutter speed (accumulation time) suitable for moving image shooting at 1/60 seconds (tc1) (st2102). Subsequently, the gain value (G2) in the amplification unit 1104 is calculated at an accumulation time suitable for still image shooting, 1/250 seconds (tc2). This is because a video signal with an accumulation time of 1/250 seconds has a lower level than a video signal with an accumulation time of 1/60 seconds. The amplification unit 1104 amplifies the video signal with a gain G2 greater than G1, and accumulates the accumulation time. It is calculated so as to be amplified to almost the same level as the 1/60 second video signal (st2103).

  Then, a low shutter speed and interlaced readout are set, and one period is photographed (st2105, st2106). Interlaced readout is performed in which odd / even lines are alternately read out for each photographing period, and a conversion unit is provided as the video output signal Vo. The recording mode is set to “video / still image mode”, the progressive shooting flag is set to “0” as shooting frame information, and shooting information data Mo is set together with other information such as a shutter speed value. (St2107). These waveforms are as shown in FIG.

  Then, when 9 frames (18 fields, 8 shooting cycles) are shot (st2111), the setting value for the high speed shutter speed and double speed progressive reading is set, and one shooting cycle is awaited. Then, after one period of shooting with a 1/250 second high-speed shutter, it is read out progressively at twice the speed of interlaced, and as shooting frame information, the recording mode is “video / still image mode” and the progressive shooting flag is “1”. And output to the conversion unit 112 (st2112, st2113, st2114).

  Next, the video signal input in the conversion unit 112 is digitized. Thereafter, a progressive frame image is detected, divided into odd / even lines, rearranged as an interlaced image as shown in the data Do of FIG. 3, converted to the DV format, and output.

  Then, in the data synthesis unit 113, the shooting information data Mo output from the imaging control unit 1109 and the shooting mode information obtained from the control unit 119 are collected as video additional data. At this time, information at the time of photographing is added to the image data subjected to the interlace conversion by the conversion unit 112. The video data converted into the DV format by the conversion unit 112, the audio data from the audio input unit 114, and the like are synthesized and output.

  The overall control unit 119 notifies the imaging control unit 1109 that the shooting start button has been pressed, and controls the operation of the recording unit 115 to start the recording operation. Then, after the video output signal Vo output from the imaging unit 11 a is converted by the conversion unit 112, the synthesis unit 113 synthesizes the audio data with the shooting frame information and the like and records the synthesized data. By operating as described above, shooting and recording are performed in the moving image / still image mode.

  Next, an operation for capturing a desired still image from the moving image of the DV apparatus 11 recorded in the moving image / playback mode will be described with reference to the flowchart shown in FIG.

  The DV device 11 and the TV device 12 are connected by a network S11. The TV viewer uses the remote control device 13 to switch the input of the TV device 11 to the interface unit 1230.

    Accordingly, the image control unit 1221 is set so that the video from the second decoder unit 1232 can be written in the capture memory 1223 and displayed on the display 1222.

  Then, when the playback button of the DV apparatus 11 is pressed, playback is started, and the composite data captured by the recording unit 115 is input to the second frame information detection unit 1231 via the interface unit 116, the network S11, and the interface unit 1230. Is done. The second frame information detection unit 1231 separates the video additional data of the synthesized data, outputs the video / audio signal to the second decoder unit 1232, and detects the moving image / still image mode in the shooting frame information. A signal for identifying the field whose flag is “1” is sent to the second decoder section 1232.

  The second decoder unit 1232 decodes the DV format video, synchronizes with the field of which the progressive shooting flag is “1”, sets the progressive shooting signal to “1”, and outputs it to the image control unit 1221. The audio data is also decoded and output from the audio output unit 1212 via the audio control unit 1211.

  The image control unit 1221 outputs the input video data to the display 1222. At this time, the field with the progressive photographing signal “1” is subjected to correction processing more suitable for the moving image and displayed together with the frames before and after the field. In addition, the field with the progressive photographing signal “1” is selected, and the image data that combines the two fields into a frame is written in the capture memory 1223 together with the time stamp (time information). Since the progressive shot image of the high-speed shutter is taken at a rate of 1 frame per 10 frames, it is also written into the capture memory at a rate of 1 frame per 10 frames. The viewer of the DV device 11 is viewing a video in which a low speed shutter and a high speed shutter are mixed. However, since a high speed image is one frame per 10 frames, a video that is hardly different from a normal low speed shutter image is viewed. Yes.

  For example, it is assumed that the TV viewer has an image to be captured in the displayed video and presses the capture button on the remote controller 13. Then, the image capture application in FIG. 10 starts operating.

  First, a time stamp of a moving image received at the remote control unit 1280, recognized by the supervisory control unit 1290, and displayed when the capture button is pressed, is searched for a progressive shot image in the capture memory 1223, If the time stamp time of the detected progressive photographed image is 0.3 seconds or more after the time when the button is pressed, that image is determined as the captured image, and if not, the image with the time stamp one before that is determined as the captured image. To do. In this way, an image within a certain time is determined as a capture progressive image from the moving image at the time closest to the time when the viewer presses the capture button.

  This value of 03 seconds can be changed according to the progressive image capturing period, user settings, and the like. The determined capture progressive captured image data is output to the image control unit 1221, switched to the video data from the second decoder unit 1232, and displayed on the display device 1222. As a result, the TV viewer can view a clear, high-resolution still image shot with a high-speed shutter and progressive (st2201).

  At the same time, the second decoder unit 1232 stops writing to the capture memory 1223 after writing 10 frames. That is, a high-speed shutter photograph image of 9 to 10 frames before and after the viewer presses the capture button is stored in the capture memory (st2202). Then, a pause command is issued to the DV device 11 via the interface unit 1230, and playback of the DV device 11 is paused (st2203).

  Next, the control unit 1290 is operated by the remote controller key unit 1302 that is subsequently pressed. When the up cursor is pressed, the image immediately before the currently displayed image is read from the capture memory 1223 to the image control unit 1221, output to the display 1222, and displayed. On the other hand, when the down cursor key is pressed, the image immediately after the one being displayed is read from the capture memory 1223 to the image control unit 1221, output to the display 1222 and displayed. Since the capture memory 1223 can store 20 frames, this operation can be displayed up to 9 frames before and 10 frames after the capture button is pressed (st2205, st2221). When the enter key is pressed, the displayed still image is stored in the data storage unit 1240 (st2206, st2231). When the “return key”, which is a key for instructing termination of the application, is pressed (st2207), a reproduction command is issued to the paused DV apparatus 11, and reproduction is started again (st2221). Then, the image control unit 1221 switches to the second decoder unit 1232 to display the video of the DV apparatus 11 (st2222), and the process ends. If any other key is pressed, the corresponding processing for that key is performed (st2208, st2241).

  If the time-out is monitored and the predetermined time key is not pressed, a playback command is issued to the DV apparatus 11 that has been paused, playback is started again (st2221), and the image controller 1221 Switching to the second decoder unit 1232 displays the video of the DV device 11 (st2222), and the process ends.

  With the above operation, a TV viewer can capture a clear, high-resolution image shot with a high-speed shutter and progressive while playing a smooth video, and can further capture multiple images before and after the capture. It is also possible to select a favorite image.

[Embodiment 2]
Next, a second embodiment of the present invention will be described. In the second embodiment, a case where a program shot at a broadcasting station is transmitted as a broadcast will be described. FIG. 11 is a block diagram illustrating a video system including the display device according to the second embodiment.

  Reference numeral 511 denotes a video camera device that captures and outputs a moving image. Reference numeral 512 denotes a recording device. A conversion control device 513 converts the data of the video camera device 511 and the data of the recording device 512 into a state in which the data can be output as a broadcast wave, and switches and synthesizes with other data. Reference numeral 514 denotes a transmission device that digitally modulates data from the conversion control device 513 and transmits the data from an antenna.

  The TV device 12 receives radio waves from the broadcasting station as in the first embodiment, displays video, audio, operation data, etc., outputs audio, and displays still images of images displayed by operations from the remote control device 13. Capture control and display are performed. The remote control device 13 is the same as that described in the first embodiment.

  FIG. 12 is a block diagram showing details of the video camera device 511. Reference numeral 51101 denotes a lens for photographing light and condensing. Reference numeral 51102 denotes a half mirror type spectroscopic device that divides light collected by a lens into two. Reference numerals 51103 and 51113 denote irises that adjust the input amounts of the two divided lights to the CCD, and are independently controlled by a control unit 51199 described later.

  Reference numerals 51104 and 51114 denote CCD image sensors, which accumulate one-screen light input, convert it into an electrical signal, and output it as an image signal to amplifiers 51105 and 51115, which will be described later, and a controller 51199. The light accumulation time in the CCD is controlled by the control unit 51199. Reference numerals 51105 and 51115 denote amplification units, which are composed of a sample and hold unit and a variable amplification unit that amplifies the signal from the sample and hold unit, and samples, holds, and amplifies the video signal converted by the CCD, Video signals Via and Vib are output to a video signal changeover switch unit 51121 described later. The gain of the variable amplification unit can be changed by the control unit 51199.

  Thus, this video camera device 511 has two image pickup systems for the same optical input. Reference numeral 51121 denotes a video signal changeover switch unit that switches between two video signals Via and Vib imaged and amplified by the two CCD image sensors 51104 and 51114 in units of fields or frames. Be controlled.

A conversion unit 51122 converts the video signal from the video signal changeover switch unit 51121 into a digital signal, and determines whether the input video is a progressively shot frame image or an interlaced field image. In the case of a frame image, this is divided into odd lines and even lines to form a two-field interlaced image and output to the conversion control device 513 as interlaced image data S511a as a whole.
Reference numeral 5119 denotes a control unit that controls the video camera device 511 in an integrated manner. The control unit 5119 includes operation buttons such as mode setting and shooting start / stop, and a small display device for the user to perform various confirmations during operation. The control unit 5119 inputs the video signal converted into an electrical signal by the CCD image pickup devices 51104 and 51114 and performs photometry processing so that the light storage amount in one shooting period does not exceed the storage capacity of the CCD image pickup devices 51104 and 51114. Control the iris and accumulation time. The accumulation time is the shutter speed for the video camera device 511 as described above. Further, the control unit 5119 can set different iris values, shutter speeds, gains, and interlace / progressive readouts for the two imaging systems. The control unit 5119 controls the variable amplification units of the amplification units 51104 and 51114 according to the converted video signal level, and controls the video signals Via and Vib together with the iris and the CCD accumulation time, or two video images. Control which one of them is output at what rate. Of course, only one of the outputs is possible. At the same time, a switching signal for two systems of video signals and a synchronizing signal for the video signals are also output.

  In addition, each unit is controlled based on setting information such as a shutter speed based on a shooting mode instructed by a photographer of the video camera device 511. Shooting information data set at the time of shooting, such as an iris value and shutter speed (CCD accumulation time) when shooting with two systems, is output as interlaced image data S511a in each shooting cycle. Shooting information such as a switched video field, frame iris value, shutter speed (accumulation time), and the like is output as a shooting frame information signal S511b in synchronization with the shooting cycle.

  FIG. 14 shows signals of the video camera device 511. VD is an imaging cycle signal, and the video camera device 511 operates based on this imaging cycle signal VD. In the second embodiment, the field period is 1/60 second. Of the two imaging systems, one is for interlaced imaging with a low-speed shutter suitable for moving images, and the other is for progressive imaging with a high-speed shutter suitable for still images at a shooting period of 1/30 seconds. .

  CHGa is a low-speed accumulation time (low-speed shutter) control signal (tc1) suitable for moving images, and light is accumulated in the CCD image sensor 51104 based on the low-speed accumulation time control signal CHGa. CHGb is a high-speed storage time (high-speed shutter) control signal (tc2) suitable for still image shooting, and light is stored in the CCD image sensor 51114 based on this high-speed storage time control signal CHGb.

  Via is a video signal read from the CCD image sensor 51104 based on the low-speed accumulation control signal CHGa and amplified by the amplifying unit 51105, and Vib is obtained from the CCD image sensor 51114 by the high-speed accumulation control signal CHGb. This is a video signal read out progressively and amplified by the amplifying unit 51115.

  SW is a switching signal between a moving image shooting field and a still image shooting frame. Normally, a low-speed shutter shooting video is output, and a video switching is performed so that one frame is output every n frames (2n fields). Signal. Vo is a video output signal switched by the video signal switch 51121. Although not shown, the synchronization signal and the like are also included in the video output signal Vo as described above.

  S511b is a photographic frame information signal for outputting photographic information such as an image field to be switched and output, or photographic information such as an iris value of a frame and a shutter speed (accumulation time) in synchronization with the photographic period.

  FIG. 13 is a diagram illustrating details of the conversion control device. Reference numeral 5131 denotes an image conversion unit which converts an input digital video signal S511 into MPEG2 stream data and outputs the stream data to the composition and switching control unit 5133. At this time, the input shooting frame information signal S511b is written as video additional data in the EBP and EIP sections describing the extended information in each picture of I, B, and P which is the picture layer (see FIG. 15). Further, in the image data obtained by dividing the above-described frame image into two fields, the shooting frame information signal S511b shot as a frame is written as video additional data.

  Reference numeral 5132 denotes an audio conversion unit that digitally compresses audio data output from the audio device 512 and outputs the compressed data to the synthesis and switching control unit 5133. The composition and switching control unit 5133 receives the MPEG2 stream data from the image conversion unit 5131 and the compressed audio data from the audio conversion unit 5132, and other video / audio data from a recording device (not shown) via the cable S 512. Entered. These various input images are synthesized and switched, and the synthesis and switching control unit 5133 finally selects and outputs data to be transmitted as radio waves. Also, it has a function of outputting the input captured video / audio data to a recording device or the like (not shown) via the cable S512.

  A TS generation unit 5134 packetizes data to be transmitted, converts it into TS data, so-called transport stream data, and outputs it. The TS data is modulated by the transmission device 514 and output as a broadcast radio wave in the air. The TV apparatus 12 that receives the output broadcast radio wave is the same as that described in the first embodiment.

  Next, an operation when the TV apparatus 12 receives what was shot by the video camera apparatus 511 and broadcasted as a TS signal will be described.

  The TV viewer switches the channel with the remote control device 13 after turning on the power switch and views the program. For example, it is assumed that the program being viewed is taken by the video camera device 511. The signal is received by the antenna unit 1201, demodulated into TS data by the tuner unit 1202, further separated, and the video / audio signal is output to the first decoder unit 1204. Other broadcast-related information data such as data broadcast data, EPG data, billing information, and event data are output to the control unit 1290 through the internal bus S129.

  Next, the first frame information detector 1203 separates the MPEG2 storm, which is the video data, and the compressed audio signal from the video / audio signal, analyzes the EBP and EIP data in the MPEG2 stream, and obtains this image. It is determined whether the frame is a high-speed shutter shooting frame, and is output to the first decoder unit 1204 together with the MPEG2 stream as high-speed shutter shooting information. If there is a progressive shot image, the progressive shot signal is set to “1”, and the first decoder unit 1204 outputs it in synchronization with the video field signal as shown in FIG.

  After that, the operation after the video data is output to the image control unit 1221 is the same as that of the first embodiment. By capturing based on the high-speed shutter information signal, a clear and high-resolution image can be captured. It becomes. The separated compressed audio signal is transferred to the first decoder unit 1204 as it is, decoded, and output through the audio control unit 1211 and the audio output unit 1212.

[Modification]
In the above embodiment, the shutter speed at the time of high-speed shutter and progressive shooting is constant. However, the speed of movement of the subject may be predicted and the high-speed shutter speed may be changed. Further, in the above embodiment, the shutter is switched to the high-speed shutter at a rate of once every certain number n times or switched to the progressive photographed image, but n may not be constant.

  As described above, when the shutter speed or n changes, even if the shutter speed itself is not monitored, it is only necessary to monitor the image with the progressive shooting flag “1”, and the control becomes easy. Further, in the above embodiment, the shutter speed has been described in the moving image / still image mode which uses two types of low speed and high speed, but as is clear from the configuration, a plurality of shutter speeds of three types or more can be selected depending on the situation. A plurality of shutter speed modes to be used may be determined in advance. In the case of shooting in a certain shooting mode, a progressive shooting flag of a frame shot progressively at a certain shutter speed or higher is set to “1”, and this is detected and captured by the TV apparatus on the receiving side.

  As mentioned above, although preferable embodiment of this invention was described, this invention is not limited to these, A various deformation | transformation and change are possible within the range of the summary.

It is a block diagram which shows the outline of the whole video apparatus which concerns on Embodiment 1 of this invention. It is a block diagram which shows the internal structure of the DV apparatus shown in FIG. It is a figure which shows the state of the signal in an imaging part. It is a figure which shows the content of video additional data. It is a conceptual diagram explaining the recording format on a magnetic tape. It is a figure which shows the output format from an interface part. It is a block diagram which shows the internal structure of TV apparatus. It is a figure which shows the signal output from a 1st frame information detection part. It is a flowchart explaining operation | movement of DV apparatus shown in FIG. It is a flowchart explaining the capture operation | movement in TV apparatus shown in FIG. It is a block diagram which shows the video system containing the video device which concerns on Embodiment 2 of this invention. It is a block diagram which shows the internal structure of the video camera apparatus shown in FIG. It is a block diagram explaining the detail of a conversion control apparatus. The figure which shows the state of the signal of the video camera apparatus shown in FIG. It is a conceptual diagram explaining the output data of the video camera apparatus shown in FIG. 3 is a block diagram showing a configuration of a remote controller 13. FIG.

Explanation of symbols

11. Digital video camera device (DV device)
11a ... Imaging unit 12 ... Television apparatus (TV apparatus)
13 ... Remote control device 72V ... Video data 74A ... Audio data 73VAUX ... Video additional data 71H ... Other information data 112 ... Conversion unit 113 ... Data composition unit 114 ... Audio input unit 115 ... Recording unit 116 ... Interface unit 119 ... Control unit 511 ... Video camera device 512 ... Recording device 513 ... Conversion control device 514 ... Transmission device 1101 ... Lens portion 1102 ... Iris portion 1103 ... Imaging device 1104 ... Amplification unit 513 ... Imaging control unit 1201 ... Antenna unit 1202 ... Tuner unit 1203 ... No. 1-frame information detection unit 1204 ... first decoder unit 1211 ... audio control unit 1212 ... audio output unit 1221 ... image control unit 1222 ... display 1223 ... capture memory 1230 ... interface unit 1231 ... second frame information detection unit 1232 ... second Decoder part 240 ... Data storage unit 1280 ... Remote control unit 1290 ... Control unit 1301 ... Remote control transmission unit 1302 ... Remote control key unit 1303 ... Remote control unit 5131 ... Image conversion unit 5133 ... Composition and switching control unit 51101 ... Lens 51102 ... Spectral device 51103, 51113 ... Iris 5119 ... Control units 51104, 51114 ... CCD imaging devices 51105, 51115 ... Amplification unit 51199 ... Control unit 51121 ... Video signal changeover switch unit 51122 ... Conversion unit CHG ... Storage time control signal CHGa ... Low speed storage time control signal (low speed) Shutter control signal)
CHGb ... High-speed accumulation time control signal (high-speed shutter control signal)
Do ... Interless image data Mo ... Shooting information data S11 ... Network SW ... Switching signal S129 ... Internal bus S511 ... Digital video signal S511a ... Interless image data S511b ... Shooting frame information signal S512 ... Other video / audio data Vi ... Video Signal Via ... Video signal Vib ... Video signal Vo ... Video output signal VD ... Imaging cycle signal VG ... Gain control signal

Claims (9)

An interlaced imaging unit that captures the captured image as an interlaced image by interlaced scanning;
A progressive imaging unit that captures the captured image as a progressive image by progressive scanning;
An image converter that converts the progressive image into an interlaced image;
A video apparatus comprising: an output unit that discretely mixes the interlaced image converted by the image conversion unit into the interlaced image captured by the interlaced imaging unit and outputs the interlaced image as a series of moving images. .   The video apparatus according to claim 1, further comprising a display for displaying the series of moving images.   The video apparatus according to claim 1, wherein a shutter speed of the interlaced imaging unit is different from a shutter speed of the progressive imaging unit.   The video apparatus according to claim 3, wherein a shutter speed of the progressive imaging unit is higher than a shutter speed of the interless imaging unit.   The still image capturing function of acquiring a still image according to a user's request from the series of moving images, and outputting the progressive image as the still image. Video equipment.   6. The video apparatus according to claim 5, wherein the progressive image captured at a time closest to a time when the request for acquiring the still image is input is output as the still image.   The video apparatus according to claim 5, further comprising a function of selecting a still image to be acquired within a predetermined time range before and after an input time point of the request for acquiring the still image. An imaging unit for imaging at a predetermined shutter speed;
Another imaging unit that performs imaging at a shutter speed different from the predetermined shutter speed;
A video apparatus comprising: an output unit configured to mix a captured image captured by the other imaging unit with a captured image captured by the imaging unit and output the mixed image as a series of moving images. A step of converting a progressive image captured by a progressive scan into an interlaced image and discretely mixing the interlaced image captured by the interless scan and outputting as a series of moving images is provided. Video output method.